Therapeutic light source



FIG. 1 is a top, front, left side perspective view of a therapeutic light source.

FIG. 2 is a front elevation view thereof.

FIG. 3 is a rear elevation view thereof.

FIG. 4 is a left side elevation top thereof.

FIG. 5 is a right side elevation view thereof.

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

The broken lines in the drawing views are included for the purpose of illustrating portions of the therapeutic light source that form no part of the claimed design. 

CLAIM The ornamental design for a therapeutic light source, as shown and described. 